Year	current US$
1976	26500000
1977	29200000.76
1978	38900001.53
1979	27200000.76
1980	41700000.76
1981	30500000
1982	35200000.76
1983	26700000.76
1984	32400001.530000005
1985	33700000.76
1986	32200000.76
1987	39500000
1988	47400001.53
1989	39700000.76
1990	38700000
1991	49500000
1992	28800000
1993	27300000
1994	28000000
1995	31700000
1996	33200000
1997	36800000
1998	39300000
1999	47100000
2000	56170000
2001	53620000
2002	57669730
2003	62750000
2004	71390000
2005	83964350
2006	100290000
2007	94990000
2008	65924820
2009	63340000
2010	88040000
2011	119727000
2012	139704000
2013	138725000
2014	150819240.9824
2015	178800140.7306
2016	193848517.8571
2017	262328167.4932
2018	210701450.4281
2019	206936185.690005
2020	235468493.520002
2021	246134328.020002
2022	216507922.479998